What is an allergic response?
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A allergic response is a hypersensitive immune reaction to a substance that normally is harmless or would not cause an immune response in most people. An allergic response may cause harmful symptoms such as itching or inflammation or tissue injury.
This answer is based on source information from the National Cancer Institute.A allergic response is a hypersensitive immune reaction to a substance that normally is harmless or would not cause an immune response in most people. An allergic response may cause harmful symptoms such as itching or inflammation or tissue... More -
Dr. Paul Ehrlich answered:The allergic response is one of nature's dirty tricks. It is a perfectly useful immune mechanism. But deprived of its natural prey - the parasites that plagued our ancestors in the cradles of civilization - it comes back to target the wrong things, and so deprive its victims of a normal, comfortable life.
The allergic response is one of nature's dirty tricks. It is a perfectly useful immune mechanism. But deprived of its natural prey - the parasites that plagued our ancestors in the cradles of civilization - it comes back to target the wrong... More

